Cushion seat and the like



' C. P. TRIMBLE CUSHION SEAT `AND THE LIKE Filed March 20, 1925 Patented Apr. 3, 192.8.

- UNITED STATES PATENT OFFICE. Y

CHARLES P. TRIMIBLE, 0F PITTSBURGH, PENNSYLVANIA, ASSIGNOB TO FORT PITT LBEDDING COMPANY, 0F

SYLVANIA.

PITTSBURGH, PENNSYLVANIA, A CORPORATION 0F PENN -V CUSHION SEAT AND THE LIKE.

Application led March 20, 1925. Serial No. 17,057.

This invention relates to cushion seats and the like and it comprises a bottom border frame, advantageously of Wire provlded with transverse, preferably longitudinally arched, channel bars or angle irons, each having a longitudinally reinforced boss along the entire top and sets of perforations through the side walls thereof, the channel bar at each end being flattened and the flattened ends bent downwardly at substantially right angles to the bars and securely wrapped (advantageously from the inside, out) around opposite sides of the bottom frame, together with coilnsprings attached to the channel bars by insertion of the lowermost coil of each spring through a set of.

perforations in the bars and means for preventing movement of the channel bars upon the frame; all as more `fully hereinafter forth and as claimed.

Among other objects of my invention is the provision of an extremely simple cushion seat of great rigidity and strength and the provision of a cushion, the' parts of which ycan be easily, cheaply and quickly assembled. The frame together with the spring supporting channel bars may be made of stamped or pressed metal and after assemblage there results a spring seat of rigid construction.

The channel bars are particularly designed to afford the greatest possible resistance to stresses and strains and are extremely simple in Mtheir construction. The bars provide space for a clamping tool to attach them and when positioned, leave space so the fabric may be readily trimmed and clamped.

In constructing covered cushion seats, it is always difficult to apply the covering and the cover holding means to the bottom frame. This is particularly true when it is desired to trim the inside edges of the covering material. In using a simple U-shaped clamp-for holding the covering around the bottom frame, it is necessary to provide thel channel bars with specially adapted means for permitting the adjustment of the-clamp, with the result that I the channel bar is weakened and thereby made less rigid and less capable `of withstanding the shocks towhich in use it is subjected.

It is one of the objects of this invention to provide channel bars which'are capable set of withstanding shocks and at the same time permit ready wrapping of the covering around the lower borderframe and permit the inside edges of the covering to be easily trimmed, while at the same time offering no obstructions to the application of the cover clamping means.

It is also an object of this invention to eliminate the tendency of the spring supporting bars to slide back and forth upon the bottom border frame. In seats having spring supporting bars with flattened lends wrapped around a border wire-,1it is found that unless some special means is provided for preventing it, the bars will-be found to slide backward and forward upon the border frame, especially during shipment and use.

ing parts,

Fig. 1 is a segmental perspective view of a portion of thecushion seat;

Fig. 2 is a section along line 2--2 of Fig. 1, f showing the cover and cover clamping means in position around the border frame;

Fig. 3 is a detailed horizontal section along line 3--3 of Fig. 1;

Fig. 4 `is, a detailed end view of Fig. 2 without the covering and covering clamping means; .f

Fig. 5 is a similar view showing a modified form of means for preventing longitudinal movement of the channel irons and F Fig. 6 is a horizontal section through Referring to the drawings, reference numeral l designates the lower border frame which may be of wire or the like. Mounted to engage opposite sides of the border frame 1 are a plurality of spring supporting bars 2.of approximately inverted U or V-shape each having a longitudinal reinforcing boss 3 along its top-and preferably extending slightly over the bent ends. The bars are preferably arched longitudinally. The extremities of the bars are flattened as at 4 and may be perforated as at 5. rlhe flattened extremities of the bars which are substantially widerthan the width of the bars are bent downwardly at substantially right-angles to the bar and are wrappedaround the lower border wire 1 by means of a suitable tool. This wide end gives a large gripping surface. Since the plane of the bars is substantially above the Aplane ofthe border frame, suilicient room is rovided for the operation of the tool.. en the flattened extremities 4 of. the channelbar are wrapped around. the bottom border :frame 1, there may be formed on the latter, through perforations 5, deformed or swaged portions` '6. These may be made by means of a punch or the like upsetting the metalV around the punch hole and 4resulting in a projection which secures the channel bars against longitudinal movement on the border wlre.

2Near the top of the channel bar at intervals along its length are sets of perforations arranged'for reception of the lowermost `coil of coil springs 7. The extreme ends of these springs after passing through these perforations may be bent to prevent accidental displacement. The springs are atf tached to the top of the seat in any appropriate manner.

The seat is provided with a cover 8 of leather or the like which is wrap around i the lower border frame and 1s securely clamped therearound by means of clamps 9. The clamps for this purpose may be of any type, such as the clips shown and claimed lin my copending 'application Serial No.

586,223. The channel bars, as described, are Y constructed in such a way that the plane of the lower edge of the channel bar is substantially above the plane of the lower border frame, due to the l provision of the 4down'- wardly extendin attenedV portions adjacent the ends of t e bars. This construction I permits ready application of the covering.

material 8 around the bottom border frame and leaves space for ready trimming of the of the channel' bal-on the bottom wire is that shown in Figs. 5 and -6. As illustrated, the swaged portions 6, formed by a punch or the 'like are spaced apartA a distance 'corresponding to the width of the lattened end of the channel bar and the upset portions so formed secure the bar in place.l

What I claim is In a cushion or seat having springs i a lower border frame, springsup rtlng -bars having 'lat ends, the ends of t `e bars being perforated and wrapped around the frame and the frame swaged portions engaging te metal around said perforations to prevent longitudinal movement of the bars.

provided with.

'In testimony whereof, I'havevhereunto af-V fixed my signature.

VCHARLES P. TRIMBLE. 

